het·er·od·ro·mous \|hed.əˈrädrəməs\adjective Etymology:heter- + -dromous : having the genetic spiral of the branches reversed in its direction from that of the main stem < heterodromous leaf arrangement > < heterodromous tendril > — compare homodromous • het·er·od·ro·my\ˌ ̷ ̷ ̷ ̷ˈ ̷ ̷ ̷ ̷mē\noun-es